单项选择题

A. Installed softwares can be used to accomplish specific tasks.
B. People can register to consult a doctor via television.
C. Smart TV can provide relaxation, entertainment and education.
D. Old people should not watch them constantly.
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单项选择题
A. Automobiles in US are lagging behind in using ethanol. B. Only a small number of car models operate on high-ethanol fuel. C. Not many gas stations offer the service of filling ethanol. D. The cars using ethanol are too expensive to buy.
A. Automobiles in US are lagging behind in using ethanol.
B. Only a small number of car models operate on high-ethanol fuel.
C. Not many gas stations offer the service of filling ethanol.
D. The cars using ethanol are too expensive to buy.
填空题
B
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